基于用户视觉能力的交互设备筛选方法

普适计算为智能环境通过多个交互设备向用户提供信息服务奠定了基础，但如何选择恰当的设备向用户提供服务仍是一项待解决的问题。论文基于用户视觉交互能力参数筛选出最优的交互设备提供服务。根据用户的视野范围和面部朝向，结合所在位置，计算显示设备相对于用户的双向可达性；根据用户的视力水平，结合显示界面字符大小，计算显示设备所显示信息对用户的可读性；综合以上两方面信息计算设备推荐率。利用具有不同视觉能力的用户对论文所提出方法进行了验证，实验结果表明所提出方法能选择出最与用户交互能力匹配的交互设备。

User Visual Ability Based Interactive Equipment Selecting Method

Pervasive computing affords intelligent environment the ability to service users with multiple display devices. However, how to select the right display device to service users is still pending. This research tries to select the optimal interactive equipment according to user visual ability. The proposed method computes mutual accessibility with fields of vision and user location and displayed information accessibility with visual acuity and character size in interfaces. These two kinds of information are combined to compute recommend ratio of a device. Finally, the proposed method is validated with users with different visual ability. Experiment results show that for users particular with visual ability, the proposed method is valid in selecting best matched device to provide information service.